Improvement in cotton-presses



Ilivrrii'n STATES- PArnNr Ormea.

A. D. BROWN, OF CLINTON, GEORGIA.

IMPROVEMENT IN COTTON-PRESSES.

Specification forming part of Letters Patent No. 7.04l7, dated January22, 1850.

provemcnt-on a Press for Baling Cotton, &c.;

and I do hereby declare that the following is a full, clear, and exactdescription, reference being had to 'the accompanying drawings, forminga part of this speciiicatiomin which- Figure lis a side and longitudinalelevation; Fig. 2,. a front or end view; .and Fig. 3 is a sidegeometrical section showing the eccentric pulley in threepositions,together with the pressing-block in the bale-box.

The same letters of reference refer to like parts in all the figures.

The nature of my invention consists in providing an eccentric groovedpulley in combination with the pressure-block, chain, and capstan orgin, the whole being so combined that the eccentric pulley will move insuch a -1uanner that the velocity of the follower will be greatest whenthe leastpower for compressing is required, and the velocity of thefollower least or less when the greatest amount of compressing force isrequired with a uniform Velocity of the lever of the capstan.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A is the frame. It is made of upright, trans verse, and longitudinaltimbers.

B is the bale-box wherein the cotton is cornpressed. It is made in theusual way, and` need not be further described.

C is the stock or follower of the pressureblock D, which block fitssnugly into the bale-box. The follower C is composed of two uprightpieces connected to the block D byscrews or otherwise, and united aboveto the tie-block Z). This follower slides up and down between guides orchecks c c on each side, which are made in any manner, to guide thefollower in a perpendicular direction to the bale-box. The follower andthe pressureblock are raised up,when the bale is pressed, by a rope orchain, a a, which is attached to the block D, as represented in Fig. 2.This rope a is operated by a windlass, E, which is turned by the pinionc, placed upon the axle of the crank-handle E2. This need not be thesubject of more description. Between the sides of the stock or followerG there is placed a pulley, F. This pulley has a groove cut on its vperiphery, in which and around part of the said pulley passes the chainG. This chain or rope is secured at one end to a staple, g, in one ofthe transverse beams of the frame A on a level with the top of thebale-box. The chain G extends from the staple g to the cap'stanor ginII, passing over the pulley F and under the fixed pulley f, asrepresented in Fig. l. The capstan is operated by power applied on thelever I, which, by winding the chain on the capstan,presses or drawsdown the follower C and the pressure-block against the cotton in thebox, thereby compressing the cotton in the same. The pulleyF is placedin the stock C on an axis eccentric or nearer to the periphery than thecenter.

S is the axle of' the pulley F. It passes through the sides of thefollower and through the said pulley, as represented. 7L is the centerof the pulley F. The axis S'rcpresents that point on which the powerapplied 011 the lever I is directed to compress the cotton in thebale-box. The space through which the follower moves in a given time isindicated by the circles in Fig. 3. It is intended that the pulley Fshould make only one-hall' a revolution in compressing the bale ofcotton, &c. In Fig. l is indicated the position of the pulley F at theperiod when the act of compression is about to take place. The dottedlines F3 indicate the position of the pulley when it has made onequarter of a revolution, during which the pressure-block and followerdescend through the space from D to D?, and F3 indicates the position ofthe pulley F after it has made the second quarter of a revolution,during the period of which the pressure-block descends only through thespace from D'l to D, having finished the compression of the bale, afterwhich the bale is prepared for taking out in the usual way.

In compressing cotton but little power is required to act upon thecotton in the box at first. Therefore the greater space through whichthe follower passes at the early stage of compressing is advantageous.W'ith the said velocity of the follower, however, there is less Thepulley F, with its axis S, eccentric to power exerted in compression iftheprime ,its center, in 'combination with the stock or mover istransmitting the power through the follower of the pressure-block D, tocompress chain G in a uniform ratio. To increase the cotton, &c., in thebale-box, in the manner speed of the follower when little power isresubstantially as herein represented and dequired to compress, and viceversa, is the obscribed.

lject and office of the eccentric pulley F, as l A. D. BROVN. hereinrepresented and described. XVitnesscs:

Having thus explained my invention, I RICHARD H. HUTCIIINGS, claim-VILEY B. Porn.

